Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'488'730
Articles rated: 2609

29 March 2024
 
  » arxiv » hep-ph/0003280

 Article overview


Electroproduction of pseudoscalar mesons on the deuteron
Michail P. Rekalo ; Egle Tomasi-Gustafsson ; Jacques Arvieux ;
Date 29 Mar 2000
Subject hep-ph
AbstractA general analysis of polarization phenomena for coherent meson electroproduction on deuterons, $e+ d o e+ d +P^0$, where $P^0$ is a pseudoscalar $pi ^0$ or $eta$-meson, is presented. The spin structure of the electromagnetic current for $P^0$-production at threshold is parametrized in terms of specific (inelastic) threshold electromagnetic form factors which depend on the momentum transfer squared and the effective mass of the produced hadronic system. We give expressions for the structure functions of the reaction $e+vec{d} o e +d+ P^0$ (where the deuteron target is polarized) in terms of these threshold form factors. The spin and isospin structures of the $gamma ^{*}+d o d+P^0$ amplitudes (where $gamma ^*$ is a virtual photon) is established in the framework of the impulse approximation and relationships between meson electroproduction on deuterons and on nucleons are given. The reaction of $pi^0$ electroproduction on deuterons is investigated in detail both at threshold and in the region of $Delta $-isobar excitation, using the effective Lagrangian approach for the calculation of the amplitudes of the elementary process $gamma^*+N o N+pi$. Special attention is devoted to the analysis of all standard contributions to the exclusive cross section for $d(e,epi^0)d$, which are functions of the momentum transfer square, $k^2$, of the excitation energy of the produced hadrons and of the pion production angle, in a region of relatively large momentum transfer. The sensitivity of these contributions to different parametrizations of the $gamma^*piomega$ form factor as well as to the choice of $NN-$potential is discussed.
Source arXiv, hep-ph/0003280
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica